Draw-bar and yoke connection.



www@ y G. M. WILCOXSON. DRAW BAR AND YOKE CONNEGTIN. APPLICATION FILED JULY 8,1913.

1,1 23,053. Patented Deo. 29, 1914.

Hw e @www UNTTED STATES PATENT OFFICE.

GEORGE lVI. WILCOXSON, OF CHATTANOOGA, TENNESSEE.

BRAVI-BAR AND YOKE CONNECTION.

Application filed July 8, 1913.

To all 'whom t may concern:

Be it known that I, GEORGE M. WILcoX- soN, a citizen of the United States, residing at Chattanooga, in the county of Hamilton and State of Tennessee, have invented new and useful improvements in Draw-Bar and Yoke Connections, of which the following is a specification.

The invention relates to key fasteners, and more particularly to the class of draw bar and yoke connections:

The primary object of the invention is the provision of a device of this character wherein a yoke and a draw bar may be securely fastened to each other and the fastener securely retained to avoid separation of the parts either accidentally or otherwise.

Another object of the invention is the provision of a fastening device wherein the gib and key employed can be readily detached for disconnecting the parts when coupled thereby.

A further object of the invention is the provision of a device of this character which will possess advantages and points of efiiciency and durability, and also which can be manufactured at a minimum cost, the device being simple in construction and readily and easily fastened in and detached from the parts coupled thereby when desired.

vWith these and other objects in view, the invention consists in the construction, combination and arrangement of parts as will be hereinafter fully described, illustrated in the accompanying drawing, and pointed out in the claim hereunto appended.

In the drawing z-F igure 1 is a fragmentary side elevation of a draw bar and yoke connection showing the device constructed in accordance with the invention. Fig. 2 is a vertical longitudinal sectional view therethrough. Fig. 3 is a plan view thereof.

Similar reference characters indicate corresponding parts throughout the several views in the drawing.

Referring to the drawing in detail, A designates a portion of a draw bar and B the yoke or strap which is adapted to be detachably connected thereto in a manner presently described, the said draw bar and the yoke being of any ordinary well-known construction and both of which are provided with elongated slots C therein which are adapted to aline with each other for re- Speccaton of Letters Patent.

Patented Dec. 29, 191.4.

Serial No. 777,883.

ceiving the fastener' hereinafter fully described.

The fastener comprises a gib 5 formed in one longitudinal edge with a cut-away portion 6 providing shoulders 7 adapted to engage the faces of the strap or yoke B so as to prevent the said gib from sliding transversely to the draw bar when inserted in the slots C in the latter and in the said strap or yoke. The slots C in the draw bar A and strap or yoke B are of greater size than the gib 5 to receive a wedge-shaped key 8which is passed through the saine and works against the remaining uncut longitudinal edge of the gib 5, the latter and the said key being fastened in the slots for the secure coupling of the said draw bar and strap or yoke B together in a manner presently described.

In one end of the gib 5 is formed a notch 9 to provide opposed lugs 10 and 11 respectively, the lug 11 being formed with a hole 12 opening into the notch 9 and in which is inserted a cotter pin 13, the ends of which are spread apart in the notch 9, and the eye of this cotter pin 13 is adapted to overlie the larger end of the key 8 when the saine, together' with the gib 5 are placed in the slots in the draw bar A and the strap or yoke B. When the key 8 is placed in the said slots C it acts against the gib 5 so as to force the same longitudinally of the draw bar A whereby the shoulders 7 will engage the faces of the strap or yoke B as is clearly shown in Figs. 1 and 2 of the drawing. After the cotter pin 13 is fastened in the gib 5 the key 8 cannot work loose, nor can the gib 5 become accidentally detached, thereby firmly securing the draw bar A and the strap B together for the secure coupling of these parts.

On the removal of the cotter pin 13 the gib can be readily detached for separating the draw bar A and the yoke B as will be clearly apparent. It will be noted that the cotter' pin 13 is engaged in the lug 11 so that the ends of the said pin when spread apart will lie between the lugs 10 and 11 and in this manner the lug 10 will serve as a guard to prevent the pin 13 from being pushed out of the lug 11 should any pressure be exerted against the end of the pin.

From the foregoing it is thought that the construction and. manner of operation of the devioe will be clearly understood, and therefore a more extended explanation has been omitted.

What is claimed as new is A detachable key comprising a notched gib adapted to be passed through slots in a pair of members, one of said members having a yoke, the notch in the gib being designed to look one member against displacement in the yoke of the other member, a wedge pin of less length than the gib and engaged in the slots at one side of the gib to hold the said gib looked in the latter member, spaced lugs on one end of the gib, and a ootter pin passed through one lug, l its head overlying the pin, while the ends of the Cotter pin will be spread apart to lie between the lugs whereby the latter will guard the ends of the pin to prevent accidental disengagement thereof.

In testimony whereof I aiiiX my signature in presence of two witnesses.

GEORGE M. YVILCOXSON. Witnesses:

THEO. Lm, Jos. F. COOPER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

